Yano, K.; Sato, F.; Takahashi, T. (1999). "Observations of mating behavior of the manta ray, Manta birostris, at the Ogasawara Islands, Japan". Ichthyological Research. 46 (3): 289–296. Bibcode:1999IchtR..46..289Y. doi:10.1007/BF02678515. S2CID46133983.
Essumang, D. K. (2009-10-01). "Analysis and Human Health Risk Assessment of Arsenic, Cadmium, and Mercury in Manta birostris (Manta Ray) Caught Along the Ghanaian Coastline". Human and Ecological Risk Assessment. 15 (5): 985–998. Bibcode:2009HERA...15..985E. doi:10.1080/10807030903153451. S2CID83551624.
Yano, K.; Sato, F.; Takahashi, T. (1999). "Observations of mating behavior of the manta ray, Manta birostris, at the Ogasawara Islands, Japan". Ichthyological Research. 46 (3): 289–296. Bibcode:1999IchtR..46..289Y. doi:10.1007/BF02678515. S2CID46133983.
Essumang, D. K. (2009-10-01). "Analysis and Human Health Risk Assessment of Arsenic, Cadmium, and Mercury in Manta birostris (Manta Ray) Caught Along the Ghanaian Coastline". Human and Ecological Risk Assessment. 15 (5): 985–998. Bibcode:2009HERA...15..985E. doi:10.1080/10807030903153451. S2CID83551624.
Yano, K.; Sato, F.; Takahashi, T. (1999). "Observations of mating behavior of the manta ray, Manta birostris, at the Ogasawara Islands, Japan". Ichthyological Research. 46 (3): 289–296. Bibcode:1999IchtR..46..289Y. doi:10.1007/BF02678515. S2CID46133983.
Essumang, D. K. (2009-10-01). "Analysis and Human Health Risk Assessment of Arsenic, Cadmium, and Mercury in Manta birostris (Manta Ray) Caught Along the Ghanaian Coastline". Human and Ecological Risk Assessment. 15 (5): 985–998. Bibcode:2009HERA...15..985E. doi:10.1080/10807030903153451. S2CID83551624.